Hoisting apparatus



Patented Sept. 6, I898. G.v A. BIDWELL, HDI STING APPARATUS.

(No Model.)

men STAT S ATENT Fr es.

HOISTING APPARATUSHA SPECIFICATION forming part of Letters Patent No.610,318, dated September 6, 1898.

7 Application filed October 12, 1897. SerialNo. 654,920. (No model.)

To all whom it may concern.-

Be it known that I, Gnonon A. BIDWELL, a citizen of the United States,residing at Pittsfield, in the county of Berkshire and State ofMassachusetts,have invented certain new and useful Improvements inHoisting Apparatus; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention appertains to what may be termed a portable hoistingapparatus, which while especially adapted for raising an entire wagon orother form of vehicle so that all of the wheels thereof will be liftedsimultaneouslyfrom the ground, yet it will be fully reliableand'eftlcient for raising any kind of load-as, for instance, for liftinga stove, piano, or other heavy objectbodily upward, so that the same maybe easily'loaded upon or unloaded from the door or truck, as the casemay be.

The object therefore of my invention may be stated, among others, to beto provide a strong and easily-operated device of the char acterspecified which may be readily moved from place to place by the personusing it.

In the accompanying drawings, Figure 1 is a perspective viewof myinvention complete, showing the upper portion of the frame in anelevated or extended position. Fig. 2 is a detail of thecontacting-faces of the stop mechanism. Fig. 3 is a side view of thestop mechanism. assembled in its operative position. Fig. 4 is aperspective detail showing parts of the stop mechanism separated. Fig. 5is an enlarged detail view of the operating-lever and the ratchet andpawl used in cooperation therewith.

Briefly stated, my invention consists in providing a framework which isso constructed that it maybe folded or collapsed, thus bringing thesupportingplatform downward in nearly the same plane occupied by thesupporting-base, and, further, in certain devices for raising thesupporting part of the frame and securing the same in'an adjustedposition.

For convenience of designating the several elements involved in myinvention figures of reference will be employed.

In carrying out my invention I provide the base or supporting-frame,consisting of the side'sections l and the end sections 2, suitablyconnected to the side sections in any rigid manner, while at each cornerof the frame thus provided I attach the supporting standards or legs 3.Near each end of the end sections 2 I rota= tably mount thereon thecollars 4, designed to lie closely in contact with the inner ends of thecorner-sections 5, each of said cornersectionsbeing cut away upon itsupper sides to form the'recess 6, designed to receive the projectinglugor stem 7, formed integral with the collar 4 or otherwise attachedthereto, the object being to prevent said collar from rotating more thanone-quarter around the end sections 2, the purpose of which will behereinafter fully apparent.

Permanently attached to each of the collars 4 are the movable standards8, the upper ends of which are each preferably provided with theT-shaped head 9, having an aperture of sufficient diameter to receivethe end sections 10 of the upper or platform section, upon which theobject to be raised is placed, said platform being formed by said endsections 10 and the side sections 11, suitably and rigidly'connectedtogether.

It will be understood that the end sections 10 are to pass looselythrough the apertures formed in theheads 9, the obj eot being to perniitthe standards 8 to'be brought-substantially into a horizontal Iposition, and thus lower .the upper or supporting platform formed by theend sections 10 and the side sections 11, as above described.

In order that the standards 8 may be brought upward into nearly avertical position, I provide thehoisting apparatus, consisting of thechain 12, the ratchet l3, and the controlling-lever 14 and suitablepawls or detents to hold said ratchet in anadj usted position. It willbe seen that the chain 12 is connected at one end to one of the endsections 10 and passes thence to the end sections 2 upon the oppositeend of the hoisting appa ratus, where it is Wound around the spool or ofwhich is to hold the ratchet 13 and its accompanying barrel in a Woundor adjusted position until the detent 19 is disengaged, which may beaccomplished by a light pressure, as by the foot, upon the free end 20of said detent.

The pawl 17 is so disposed that it will 00- operate with the detent 19and aid the latter in holding the ratchet 13 in a wound or adjustedposition. In like manner the detent 17 is provided with the pedal orhandle 21, by means of which the pawl or detent may be readilydisengaged.

It will be understood that my improved hoisting apparatus may be made ofany suitable material, though it is thought that more satisfactoryresults would be obtained from the use of tubular sections, as suchsections combine both strength and lightness.

The operation of my improved hoisting apparatus is as follows: Theapparatus is placed in the initial position by disengaging the detentsl7 and 19, when the chain 12 will become unwound, permitting theplatform-section to drop downward into contact with the base-section,when the object to be raised may be easily placed thereon.

After theobject to be raised has been placed in'position the lever 14 ismanipulated so as to rotate the ratchet 13, each rotation or partialrotation thereof being secured and held by said detents. After theobject has been raised to the desired height, as for the purpose ofloading it upon a carrying-truck or readily enteringit in an elevateddoorway, further reciprocation of the lever 14 is omitted, when theobject may be readily moved into the desired position. If it is desiredto raise an entire vehicle so that the wheels thereof may be removed forany purpose, my improved hoisting apparatus is placed under the vehicleafter the platform-section thereof has been sufficiently depressed orcollapsed, when a proper manipulation of the'lever 14 will bring thevehicle into the desired position, as will be readily understood.

By the construction set forth it will be seen that when the standards 8approach a true vertical position the stop 7 will come in contact withthe shoulder 22, formed by'the recess 6, and thus prevent the frameworkfrom falling over in an opposite direction from which it Was raised,while the shoulder 23 upon the opposite end of said recess will preventa total collapse of the frame, as will be readily apparent.

Believing that the construction,advantages, and operation of my improvedhoisting apparatus will be made fully apparent from the foregoingspecification and the drawings, I will dispense with further referenceto the details thereof.

Having thus fully described my invention, What I claim as new, anddesire to secure by Letters Patent, is

1. A rectangular hoisting apparatus consisting of a base and anelevating-platform and end posts connecting said base and platform, allcomposed of tubes, right-angled collars at the corners of the base intowhich fit the basetubes, said collars being provided withsupporting-legs, and means carried by the base to limit the upwardmovement of the platform, all arranged as set forth.

2. A rectangular hoisting apparatus, composed of a tubular base havingright-angled collars at its corners, a tubular platform, collars on theend tubes of the platform, vertical tubes fitting the collars on the endpieces and the right-angled collars and means to limit the upwardmovement of the platform, all arranged as set forth.

3. A rectangular hoisting apparatus consisting ofia base anelevating-platform, collars at the corners of the base havinglimiting-stops,limiting-recesses in the base-corners in which the stopworks, and means to operate the apparatus, all combined as set forth.

In testimonywhereof I affix my signature in presence-of two witnesses.

GEORGE A. BIDVELL.

Witnesses:

EDGAR M. W001), HORACE T. GoMBs.

